--- a/core/tests/Drupal/Tests/Core/Access/AccessResultTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/AccessResultTest.php
@@ -433,7 +433,9 @@ public function testCacheTags() {
     $this->assertEquals($a, $b);
 
     // ::cacheUntilConfigurationChanges() convenience method.
-    $configuration = $this->getMock('\Drupal\Core\Config\ConfigBase');
+    $configuration = $this->getMockBuilder('\Drupal\Core\Config\ConfigBase')
+      ->disableOriginalConstructor()
+      ->getMock();
     $configuration->expects($this->any())
       ->method('getCacheTags')
       ->will($this->returnValue(array('config:foo.bar.baz')));